Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a29d053021c14e…

MALICIOUS

PDF

100.0 KB
MD5: 8f289598a75b1ae8f8b3bac0d076dc7e SHA-1: 77d5341885ec8f810f0afcd9ce9b183d850b67c1 SHA-256: 82a29d053021c14e0be9665c55c1ea961b19d1c2e0792a8ab2c3bc20c884bede
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file is flagged as malicious by an ML classifier and contains an exploit for CVE-2010-0188, targeting Adobe Reader's LibTIFF component. The XFA form structure suggests it's designed to deliver this exploit. While the DOC BODY and SCRIPTS sections were truncated, the presence of an embedded file and script payload indicates a likely attempt to download and execute a secondary stage. The benign URLs present are likely decoys or standard XFA schema references.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
5b1cef2b96b83ee2868e9ef7cd6ebd45d2fd7b9aaf3680015a609bc956da1558		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101613 bytes

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